>And
>think about owl vision. There was a nova program many years ago that had a
>significant portion on how a Barn Owl catches mice. This material only begins
>to scratch the surface on information on the vision of owls.

Actually barn owls can catch mice in absolute darkness, i.e. by sound
alone. A relatively famous set of experiments were done long ago (30
or 40 years) in large, light-tight enclosures.

I find the adaptations which enable this to be far more fascinating
than the visual adaptations. Sci Am had some great stuff on this
a few years ago.

- Don Baccus, Portland OR <donb at rational.com>